Antonyms for the term "tower strength" could vary depending on which aspect of strength is being considered. In terms of physical strength, some possible antonyms could be weakness, fragility, feebleness, or lack of fortitude. On the other hand, if we are talking about the strength of an argument or a position, antonyms could be weakness, faltering, or indefensibility. It is worth noting that the opposite of strength is not necessarily always a negative trait. For example, flexibility, adaptability, and versatility could be seen as antonyms to the rigid, monolithic nature of strength in certain contexts. Ultimately, the appropriate antonym will depend on the specific meaning being conveyed by "tower strength.